据美国糖尿病协会(ADA)报道,每年美国发生妊娠并发糖尿病的患者人数超过20万例,约占妊娠妇女总数的7%;而某些人群的发病率可能为1%或甚至高达14%。这些患者中,妊娠前无糖尿病史者为90%;患1型或2型糖尿病患者为10%。来自于美国疾病控制预防中心(CDC)的报告指出,美国每年约有185万例18～44岁的女性糖尿病患者,约50万例患者未予以确诊。另据CDC有关糖尿病与妇女健康的研究结果显示,并发糖尿病的妊娠女性再次妊娠合并糖尿病的发病风险可增加 According to the American Diabetes Association (ADA), there are more than 200,000 cases of pregnancy-induced diabetes in the United States each year, accounting for about 7% of the total number of pregnant women. In some populations, the incidence may be 1% or even up to 14%. Among these patients, 90% had no history of diabetes before pregnancy and 10% had type 1 or type 2 diabetes. The report from the CDC points out that in the United States, there are about 1.85 million women aged 18-44 years with diabetes each year, and about 500,000 patients are not diagnosed. According to CDC diabetes and women’s health research results show that pregnant women with diabetes, pregnancy risk of second trimester associated with increased risk of diabetes